A reconstruction method of intra-ventricular blood flow using color flow ultrasound: a simulation study

Jaeseong Jang; Chi Young Ahn; Kiwan Jeon; Jung-il Choi; Changhoon Lee; Jin Keun Seo

doi:10.1117/12.2081308

17 March 2015 A reconstruction method of intra-ventricular blood flow using color flow ultrasound: a simulation study

Jaeseong Jang, Chi Young Ahn, Kiwan Jeon, Jung-il Choi, Changhoon Lee, Jin Keun Seo

Proceedings Volume 9417, Medical Imaging 2015: Biomedical Applications in Molecular, Structural, and Functional Imaging; 941728 (2015) https://doi.org/10.1117/12.2081308
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

A reconstruction method is proposed here to quantify the distribution of blood flow velocity fields inside the left ventricle from color Doppler echocardiography measurement. From 3D incompressible Navier- Stokes equation, a 2D incompressible Navier-Stokes equation with a mass source term is derived to utilize the measurable color flow ultrasound data in a plane along with the moving boundary condition. The proposed model reflects out-of-plane blood flows on the imaging plane through the mass source term. For demonstrating a feasibility of the proposed method, we have performed numerical simulations of the forward problem and numerical analysis of the reconstruction method. First, we construct a 3D moving LV region having a specific stroke volume. To obtain synthetic intra-ventricular flows, we performed a numerical simulation of the forward problem of Navier-Stokes equation inside the 3D moving LV, computed 3D intra-ventricular velocity fields as a solution of the forward problem, projected the 3D velocity fields on the imaging plane and took the inner product of the 2D velocity fields on the imaging plane and scanline directional velocity fields for synthetic scanline directional projected velocity at each position. The proposed method utilized the 2D synthetic projected velocity data for reconstructing LV blood flow. By computing the difference between synthetic flow and reconstructed flow fields, we obtained the averaged point-wise errors of 0.06 m/s and 0.02 m/s for u- and v-components, respectively.

Citation Download Citation

Jaeseong Jang, Chi Young Ahn, Kiwan Jeon, Jung-il Choi, Changhoon Lee, and Jin Keun Seo "A reconstruction method of intra-ventricular blood flow using color flow ultrasound: a simulation study", Proc. SPIE 9417, Medical Imaging 2015: Biomedical Applications in Molecular, Structural, and Functional Imaging, 941728 (17 March 2015); https://doi.org/10.1117/12.2081308

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